server/red_worker: use red_channel_is_connected
server/red_worker: use red_channel_is_connected

elmarco/spice,elmarco/spice,alon/spice-server,SPICE/spice,freedesktop-unofficial-mirror/spice__spice,elmarco/spice,alon/spice-server,fgouget/spice,dezelin/spice,dezelin/spice,Fantu/spice,alon/spice-server,ya-mouse/spice,fgouget/spice,fgouget/spice,ya-mouse/spice,dezelin/spice,dezelin/spice,elmarco/spice,Fantu/spice,SPICE/spice,mathslinux/spice,mathslinux/spice,alon/spice-server,alon/spice-server,dezelin/spice,ya-mouse/spice,SPICE/spice,Fantu/spice,freedesktop-unofficial-mirror/spice__spice,mathslinux/spice,elmarco/spice,mathslinux/spice,Fantu/spice,freedesktop-unofficial-mirror/spice__spice,freedesktop-unofficial-mirror/spice__spice,fgouget/spice,freedesktop-unofficial-mirror/spice__spice,mathslinux/spice